题解 | 将字段逆序输出文件的每行

#!/bin/bash

while read line;do
    line=$(echo "$line" | sed 's/:/\n/g')
    newline=""
    l=$(echo "$line" | wc -l)
    for(( i=$l;i>=1;i=i-1 ));do
        newline="$newline:"$(echo "$line" | sed -n ${i}p)
    done
    newline=$(echo $newline | sed 's/^://')
    echo $newline
done < nowcoder.txt